Nice thing about wood is the wide range of spines available. That enables you find a spine range that works for you at the arrow length you want. For example, I cut my arrows so they extend one-inch beyond the back of the bow, plus the point. After some experimentation, I know what spine I have to get for the bows i shoot.
Personally, I don't want an arrow any longer. It's not that they don't shoot well if tuned to the bow. Rather, the extra inch or three of arrow length if I didn't trim them means longer arrows hanging out of my bow quiver, and a longer arrow protruding from the back of the bow before drawn, both of which can get in the way in tight situations. On shorter bows with bow quivers, longer arrows also end up with their nocks sticking into the dirt when you rest the bow up against a tree or whatever.